Gottlob himmel



Nu. 62l,567. Patented Mar. 2l, |899. G. HIMMEL.

' INCANDESCENT BURNER.

f (Appxicatiun meapr. 12, 189s.)

(No Model.)

THENoRms PETERS co. r'noouwo'. WASHINGTON, D. c.

NrTED STATESv PATENT l 'Ferca eorrLoB IIMMEL, oF TBINGEN, GERMANY.

INCANDESC'ENT BURNER.

SPECIFICATION forming part -of Letters Patent No. 621,567, dated March21, 1899. Application flied April 12, 1898. Serial No. 677,367. (Nomodel.)

To all whom it may concern.-

Be it known that LGoTTLoB HIMMEL,a citizen of the Empire of Germany,residing at T- bingen, in the Kingdom of Wrtemberg, Germany,haveinvented a certain new and useful Improvement in Incandescent Burners;and I do hereby declare the following to be a full, clear, andexactdescription of the invention, such as will enable others skilled inthe art to which it appertains to make and use the same.

My invention relates to improvements in incandescent burners.

The object of my invention is to provide a structure by means of whichthe mantle,which is very fragile, will be protected from sudden shocks,not only from lateral shocks, but also from those which may act in avertical or substantially vertical direction.

My invention consists in suspending the upper part of the lamp,including the incandescent mantle and chimney,upon an integral resilientair-tube or burner-tube.

The invention will be more specifically described in connection with theaccompanying drawings, in which- Figure lis a longitudinal centralsection of a burner-tube embodying my invention; Fig. 2 a transversesection, Fig. '3 an elevation, and Fig. 4 a plan view, of the same. Fig.5 is an elevation of a modified form of my invention; Fig. 6, atransverse section of the same; Fig. 7, an elevation of anothermodification of my invention; Fig. 8, a transverse section of the same,and Fig. 9 an elevation of a complete lamp embodying my invention.

` In carrying out my invention I make the burner-tube A resilient at onepart of its length, so that it is not only iiexible laterally, but alsocompressible and extensible. This I accomplish by slotting the tube, asshown in the drawings. The most suitable manner of obtaining the desiredresult is to form a helical slot C in the lower part a of the tube A,the pitch of the helix being of any desired amount necessary to give aresilient action properly proportioned to the weight of the lamp. Bythis construction the 'burner-tube is fully resilient, and therebyprevents the direct transmission of shocks to the upper part of theburner=tube and lamp, so that no sudden jarring of the mantle can occur.

is to be observed, moreover, that the helical slot C', located in thelower part of the burnertube, replaces the ordinary air-supply holes andhas an additional advantageous action compared with such holes, sincethe helical slot produces a rotary action of the air, this resulting ina'better and more rapid mixture of the air and gas in the part a of 'theburner tube.

Instead of forming the slot in the lower part of the tube it may be madein the upper part d', as shown in Figs. 5 and 6, in whichcase the upperpart of the lamp, including the mantle and chimney,must be carried fromthe upper part of the said burner-tube. Furthermore, instead of making ahelical slot in the tube I may cut straight slots alternately from theright and left of the tube, as shown at C', Figs. 7 and 8. Y

It will be observed that by my invention the mantle and its support willbe protected from breakage due to sudden shocks in any direction owingtothe fact that the burnertube is resilient at one part.

I. am aware that it is old to support the mantle in an elastic manner;but so far as I am aware no construction has been produced prior to myinvention where the burner-tube made in one piece has a portion of itslength `rendered resilient, thus allowing the burnertube itself toperform the function of a cushion for the mantle and doing awaywith theuse of separate springs, whereby the desired result is attained in avery simple and efficient manner.

By my use of the term burner-tube I do not include a gas-pipe. having aportion of its length coiled, but intend the said term burner-tube asdesignating a tube having the general purposes or functions of thatshown in Fig. l.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is

1. In an incandescent lamp, the combination, with an incandescentmantle, of an integral burner-tube arranged to support the mantle andhaving one portion of its length resilient.

2. In an incandescent lamp, the combination,with an incandescentmantle,of a burner IOO- tube supporting the mantle and provided with aslot in one portion extending partly around the tube and arranged toform a resilient portion.

3. In an incandescent lamp, the combination,witl1 an incandescentmantlc,of a burnertube arranged to" support the same and provided at oneportion with a helical slot.

4;. In an incandescent lamp, the combination with an incandescentmantle, of a burnertube arranged to support the mantle and provided witha slotted resilient portion at its lower end.

5. In an incandescent lamp, the combination,witl1 an incandescentmantle,of a burnertube arranged to support the same and pro vided with ahelical slot at its lower end.

6. In an incandescent burner,the combination, with an incandescentmantle, of a slotted burner-tube arranged to support said mantle, saidtube having its slots so located and proportioned as to produce theusual Bunsen effect, and at the same time to render the burner-tuberesilient.

In testimony whereof I affix my signature in presence of two witnesses.

GOTTLOB HIMMEL. Witnesses:

AUGUST DRAUTZ, H. WAGNER.

